Figure 4. CD40 agonist induces a shifts in the MMP gene expression profile in tumors that is dependent on inflammatory monocytes and IFN-γ.
(A) Heat map showing global gene expression in tumor homogenates from mice with implanted PDAC tumors one day after treatment with control (n = 9) or anti-CD40 (n = 10). Statistical significance was determined using one-way Anova with Bonferroni correction for multiple comparisons testing. P values are shown to right of heat map. (B) Tumor-bearing mice were treated with control or anti-CD40 with or without depletion of Ly6C+ inflammatory monocytes or Ly6G+ granulocytes. Shown is relative transcript expression for Mmp3, Mmp9, Mmp10, Mmp12, and Mmp13. n=5-10 mice per group. (C) qRT-pCR analysis from tumor homogenate cDNA isolated one day after treatment. Displayed are fold changes in Mmp genes relative to control treatment. For panels B-C, significance testing was performed using unpaired 2-tailed Student's t test. *, P < 0.05; **, P<0.01; ****, P<0.0001.
